The engine that Sonic Islands is using was built solely with speedy, 360 degree platforming in mind. Attempting to recreate the classic physics in 3D, Sonic Islands also adds abilities inspired by the modern games, such as the Homing Attack and the Bounce Attack, on top of some new abilities for Sonic's moveset, like the Drift-Dash, or moves from the classic games rarely used in 3D, like the Insta-Shield.
Islands also attempts a more acrobatic, exploratory design for Sonic, which tries to incentivise more nuanced, free flowing platforming, as well as rescuing animals to unlock extra areas.
Run around the zone and try collect as many emeralds as you can, as each one adds a new move to your moveset. ...You might even find a way to power them up too!
If you want to keep up with any updates, I'm on twitter at https://twitter.com/SteveTGames
(Apologies for the blocky terrain and performance issues. If you need some more frames, try using the Low End build.)
We just updated our SFGHQ Rules & Guidelines. Give them a read, it might just save your life!
Our pals from the SHC are going to be running the Sonic Hacking Contest a little later this year, a bit after SAGE! You should totally check it out by clicking here!